Impact Resistant Touchscreen Display Module with Compliant Layer
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Solution Overview
Problem
Conventional touchscreen display modules in mobile devices are vulnerable to physical impacts, leading to damage and the need for entire module replacement, which is costly and inefficient, as the components are conventionally bonded together and brittle.
Innovation Solution
A touchscreen display module design featuring a touchscreen panel with a rigid spacer and compliant layer, securely framed by a housing assembly, providing impact resistance without adding bulk, and allowing for severability of components for repair.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If components are conventionally bonded together using optically clear adhesive, then the display screen module is structurally integrated, but the entire module must be discarded if the display screen is damaged due to physical impact
Solution Approach 1:
The display screen module is divided into separable components: touchscreen panel, rigid spacer, compliant layer, and display screen. The compliant layer acts as a decoupling element that allows impact absorption while maintaining component separability for repair purposes.
Solution Approach 2:
A compliant layer is inserted between the rigid spacer and the display screen to provide beforehand cushioning. This compliant layer absorbs impact energy before it reaches the brittle display screen, preventing damage while allowing component separation for repair.
2Reliability
If a rigid structure is added to protect against impact, then impact resistance is improved, but physical bulk and complexity increase
Solution Approach 1:
The rigid spacer is positioned only at the periphery of the touchscreen panel where it is most needed for impact protection, rather than making the entire structure rigid. This localized approach provides robustness while minimizing added bulk and complexity.
Solution Approach 2:
The display screen module uses a composite structure combining rigid materials (spacer, housing) with compliant materials (elastomeric layer). This composite approach provides impact resistance through material properties rather than increasing overall structural complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances the robustness and durability of touchscreen display modules, enabling them to withstand physical shocks and impacts while allowing for cost-effective and practical repair by separating the touchscreen and display screen components.
Implementation Method 1
the rigid spacer securely disposed in contact with non-touch sensitive periphery of the touchscreen panel by an adhesive layer
Implementation Method 2
a compliant layer underlaying the rigid spacer, the compliant layer disposed in contact with the rigid spacer
Data Source
AI summary
A method and apparatus for an impact resistant touchscreen display module, such as for use in ruggedized mobile computing and display devices. The structure provided also allows for severability of the touchscreen and display screen portions, enhancing the practicability of replacing individual components for repair of a damaged touchscreen display module.